Ore-concentrating machinery



(No Model.)

J. GARVIN. ORE GONOENTRATING MACHINERY.

A Patented'Sept. 9, 1890.

gumforc A E kA /X arm/me FHO'TO-LITKKL, WASHINGTO UNITED STATES PATENT OFFICE.

JOHN C. GARVIN, OF LEADVILLE, COLORADO, ASSIGN OR, BY DIRECT AND MESNE ASSIGNMENTS, TO THE GARVIN ORE-REDUCTION COMPANY,

OF COLORADO.

ORE-CONCENTRATING.MACHINERY.

SPECIFICATION forming part of Letters Patent No. 436,285, dated September 9, 1890.

Application filed September 3, 1888. Serial No. 284,480lr. (No model.)

To all whom it may concern.-

Be it known that 1, JOHN C. GARVIN, of the city of Leadville, in the county of Lake and State of Colorado, have invented a new and useful Improvement in Apparatus for the Washing, Dressing, and Concentration of Ore or other Minerals; and I do hereby declare that the following is a full, clear, and exact description of the same.

The constituents of my said invention are a straight semicircular or cone-shaped trough, with a shaft set lengthwise therein, and working in ordinarybearing-boxes attached to said shaft by spokes, and runningits whole length is wound spirally, with a right-hand turn, a continuous flange or rim, and so fitted that when the shaft revolves it moves freely Within the trough and a water duct or pipe.

Reference being made to the accompanying drawings, Figure l is a plan view of the machine embodying my invention. Fig. 2 represents a side elevation of the same. Fig. 3 shows the outside of the upper or delivery end. Fig. 4: shows the outside of the lower or discharge end through which the tailings pass.

A designates a trough, preferably semicircular in cross-section, as shown. A shaft B extends longitudinally of this trough and is journaled in its ends. At convenient intervals this shaft is provided with radial spokes 1), arranged in alternating series, and a continuous spiral flange G is fastened to their outer ends, winding about said shaft as an axis and extending from end to end of said trough. One end wall of the latter is higher than the other, and as said shaft is journaled on top of these end walls the said shaft and spiral flange are necessarily-given a corresponding inclination from end to end. Said shaft is provided with a belt-pulley E to allow its rotation. An opening H in the side of said trough allows the insertion of the feed-pipe (indicated by dotted lines and the letter H in Fig. 4.) Through this the crushed ore is supplied to the trough, the discharge of ore from the latter being through an opening F in the upper end of the trough. In the other end an opening G, which may be made adjustable, allows the tailings to escape. Water is supplied by means of a pipe D, which extends lengthwise of the trough, and. just above one side of it from end to end being finally arched over the upper end of said trough at D, as shown in Fig. 3. The straight part of said pipe is perforated at intervals, each opening being provided with a stop-cock 01, whereby I am enabled to control the water supply both as to place and quantity. The end of the pipe may also discharge into the opposite side of the trough. By the arrangement of stop-cocks, as shown, the jets of water may be directed so as to strike the spiral flanges on their upward turn, and so free them from the pulp and materially assist in the separation of its constituents.

The trough I use is sixteen feet in length by eighteen inches interior diameter. The

shaft is of two-and-one-half-inch piping and nine-sixteenths-inch thick. Theflangeis threefoufths inch wide by one-fourth-inch thick for the lower half of its length and one-eighthinoh thick for the remainder. A two-and-onehalf-inch water-pipe is used, with half-inch stop-cocks set three inches apart.

The trough may be of any convenientlength and reasonable diameter; but I recommend a trough of the length and diameter above described, for the reason that ample room is thereby given for the interaction of the agencies employed.

The operation of the machine is as follows: The trough is set at an inclination varying with the coarseness or fineness of the ore to be treated, the coarser the ore the greater the inclination. With a sixteen-foot trough the inclination will be about nine degrees. The stop-cocks being opened, water is turned on,

' the shaft put in motion, and ore fed into the trough. The forward movement of the skeleton spiral, foroin g the pulp up the trough against the current of water, acts as a continuous moving riffie and quickly dissociates the constituents of the pulp, the heavier and valuable particles of which settle and become subject to the conveying action of the moving spiral, while the gangue and light material are by the same operation worked to I would have it understood that I do not.

confine myself to the precise details herein given, as such maybe varied without departing from the principle of the invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In combination with. a trough and a c0nveyer consisting of a shaft, spokes, and spiral flange rotating therein, a pipe for supplying Water to said trough and conveyer, extending longitudinally of said trough and provided at intervals with apertures and stopcooks, for the purpose set forth.

2. A pipe D, provided at one end with an arched part D, and having stop-cocks d for discharging Water into various parts of a trough, in combination with said trough and conveyer arranged therein, said arched part D extending over one end of said trough from side to side, substantially as set forth.

JOHN (J. GARVIN.

Witnesses:

HENRY MooDY, ED'WARD T. BRADFORD. 

